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Finding the Fourth Proportional to 311,382.12, 429,709.86 and 177,254.76

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Solution

The fourth proportional to 311,382.12, 429,709.86 and 177,254.76 is: 244,613.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,382.12 : 429,709.86 = 177,254.76 : x
  2. Step 2: Convert to fraction form
    311,382.12/429,709.86 = 177,254.76/x
  3. Step 3: Cross multiply
    311,382.12x = 429,709.86 × 177,254.76
  4. Step 4: Simplify right side
    311,382.12x = 76,168,118,103.93
  5. Step 5: Solve for x
    x = 76,168,118,103.93/311,382.12
  6. Step 6: Final answer
    x = 244,613.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.